Buggy code:
@ Override public DhcpServiceProvider getDhcpServiceProvider ( Network network ) { } protected boolean isSharedNetworkWithServices ( Network network ) { } protected boolean isSharedNetworkOfferingWithServices ( long networkOfferingId ) { } @ Override public List < ? extends Nic > listVmNics ( long vmId , Long nicId , Long networkId ) { } @ DB @ Override public boolean reallocate ( final VirtualMachineProfile vm , DataCenterDeployment dest ) throws ConcurrentOperationException , InsufficientCapacityException { } private boolean cleanupNetworkResources ( long networkId , Account caller , long callerUserId ) { } private boolean shutdownNetworkResources ( long networkId , Account caller , long callerUserId ) { } @ Override public boolean processAnswers ( long agentId , long seq , Answer [ ] answers ) { } @ Override public boolean processCommands ( long agentId , long seq , Command [ ] commands ) { } @ Override public AgentControlAnswer processControlCommand ( long agentId , AgentControlCommand cmd ) { } @ Override public void processConnect ( Host host , StartupCommand cmd , boolean forRebalance ) throws ConnectionException { if ( ! ( cmd instanceof StartupRoutingCommand ) ) { return ; } long hostId = host . getId ( ) ; StartupRoutingCommand startup = ( ( StartupRoutingCommand ) ( cmd ) ) ; String dataCenter = startup . getDataCenter ( ) ; long dcId = - 1 ; DataCenterVO dc = _dcDao . findByName ( dataCenter ) ; if ( dc == null ) { try { dcId = Long . parseLong ( dataCenter ) ; dc = _dcDao . findById ( dcId ) ; } catch ( final NumberFormatException e ) { } } if ( dc == null ) { throw new IllegalArgumentException ( ( ( ( "Host<seq2seq4repair_space>" + ( startup . getPrivateIpAddress ( ) ) ) + "<seq2seq4repair_space>sent<seq2seq4repair_space>incorrect<seq2seq4repair_space>data<seq2seq4repair_space>center:<seq2seq4repair_space>" ) + dataCenter ) ) ; } dcId = dc . getId ( ) ; HypervisorType hypervisorType = startup . getHypervisorType ( ) ; if ( NetworkOrchestrator . s_logger . isDebugEnabled ( ) ) { NetworkOrchestrator . s_logger . debug ( ( "Host's<seq2seq4repair_space>hypervisorType<seq2seq4repair_space>is:<seq2seq4repair_space>" + hypervisorType ) ) ; } List < PhysicalNetworkSetupInfo > networkInfoList = new ArrayList < PhysicalNetworkSetupInfo > ( ) ; List < PhysicalNetworkVO > physicalNtwkList = _physicalNetworkDao . listByZone ( dcId ) ; for ( PhysicalNetworkVO pNtwk : physicalNtwkList ) { String publicName = _pNTrafficTypeDao . getNetworkTag ( pNtwk . getId ( ) , Public , hypervisorType ) ; String privateName = _pNTrafficTypeDao . getNetworkTag ( pNtwk . getId ( ) , Management , hypervisorType ) ; String guestName = _pNTrafficTypeDao . getNetworkTag ( pNtwk . getId ( ) , Guest , hypervisorType ) ; String storageName = _pNTrafficTypeDao . getNetworkTag ( pNtwk . getId ( ) , Storage , hypervisorType ) ; PhysicalNetworkSetupInfo info = new PhysicalNetworkSetupInfo ( ) ; info . setPhysicalNetworkId ( pNtwk . getId ( ) ) ; info . setGuestNetworkName ( guestName ) ; info . setPrivateNetworkName ( privateName ) ; info . setPublicNetworkName ( publicName ) ; info . setStorageNetworkName ( storageName ) ; PhysicalNetworkTrafficTypeVO mgmtTraffic = _pNTrafficTypeDao . findBy ( pNtwk . getId ( ) , Management ) ; if ( mgmtTraffic != null ) { String vlan = mgmtTraffic . getVlan ( ) ; info . setMgmtVlan ( vlan ) ; } networkInfoList . add ( info ) ; } if ( NetworkOrchestrator . s_logger . isDebugEnabled ( ) ) { NetworkOrchestrator . s_logger . debug ( "Sending<seq2seq4repair_space>CheckNetworkCommand<seq2seq4repair_space>to<seq2seq4repair_space>check<seq2seq4repair_space>the<seq2seq4repair_space>Network<seq2seq4repair_space>is<seq2seq4repair_space>setup<seq2seq4repair_space>correctly<seq2seq4repair_space>on<seq2seq4repair_space>Agent" ) ; } CheckNetworkCommand nwCmd = new CheckNetworkCommand ( networkInfoList ) ; CheckNetworkAnswer answer = ( ( CheckNetworkAnswer ) ( _agentMgr . easySend ( hostId , nwCmd ) ) ) ; if ( answer == null ) { NetworkOrchestrator . s_logger . warn ( ( "Unable<seq2seq4repair_space>to<seq2seq4repair_space>get<seq2seq4repair_space>an<seq2seq4repair_space>answer<seq2seq4repair_space>to<seq2seq4repair_space>the<seq2seq4repair_space>CheckNetworkCommand<seq2seq4repair_space>from<seq2seq4repair_space>agent:" + ( host . getId ( ) ) ) ) ; throw new ConnectionException ( true , ( "Unable<seq2seq4repair_space>to<seq2seq4repair_space>get<seq2seq4repair_space>an<seq2seq4repair_space>answer<seq2seq4repair_space>to<seq2seq4repair_space>the<seq2seq4repair_space>CheckNetworkCommand<seq2seq4repair_space>from<seq2seq4repair_space>agent:<seq2seq4repair_space>" + ( host . getId ( ) ) ) ) ; } if ( ! ( answer . getResult ( ) ) ) { <START_BUG> NetworkOrchestrator . s_logger . warn ( ( ( ( "Unable<seq2seq4repair_space>to<seq2seq4repair_space>setup<seq2seq4repair_space>agent<seq2seq4repair_space>" + hostId ) + "<seq2seq4repair_space>due<seq2seq4repair_space>to<seq2seq4repair_space>" ) + ( answer != null ? answer . getDetails ( ) : "return<seq2seq4repair_space>null" ) ) ) ; <END_BUG> String msg = "Incorrect<seq2seq4repair_space>Network<seq2seq4repair_space>setup<seq2seq4repair_space>on<seq2seq4repair_space>agent,<seq2seq4repair_space>Reinitialize<seq2seq4repair_space>agent<seq2seq4repair_space>after<seq2seq4repair_space>network<seq2seq4repair_space>names<seq2seq4repair_space>are<seq2seq4repair_space>setup,<seq2seq4repair_space>details<seq2seq4repair_space>:<seq2seq4repair_space>" + ( answer . getDetails ( ) ) ; _alertMgr . sendAlert ( ALERT_TYPE_HOST , dcId , host . getPodId ( ) , msg , msg ) ; throw new ConnectionException ( true , msg ) ; } else { if ( answer . needReconnect ( ) ) { throw new ConnectionException ( false , "Reinitialize<seq2seq4repair_space>agent<seq2seq4repair_space>after<seq2seq4repair_space>network<seq2seq4repair_space>setup." ) ; } if ( NetworkOrchestrator . s_logger . isDebugEnabled ( ) ) { NetworkOrchestrator . s_logger . debug ( "Network<seq2seq4repair_space>setup<seq2seq4repair_space>is<seq2seq4repair_space>correct<seq2seq4repair_space>on<seq2seq4repair_space>Agent" ) ; } return ; } } @ Override public boolean processDisconnect ( long agentId , Status state ) { } @ Override public boolean isRecurring ( ) { } @ Override public int getTimeout ( ) { } @ Override public boolean processTimeout ( long agentId , long seq ) { } @ Override public Map < String , String > finalizeServicesAndProvidersForNetwork ( NetworkOffering offering , Long physicalNetworkId ) { } private List < Provider > getNetworkProviders ( long networkId ) { } @ Override public boolean setupDns ( Network network , Provider provider ) { } protected NicProfile getNicProfileForVm ( Network network , NicProfile requested , VirtualMachine vm ) { } @ Override public NicProfile createNicForVm ( Network network , NicProfile requested , ReservationContext context , VirtualMachineProfile vmProfile , boolean prepare ) throws ConcurrentOperationException , InsufficientAddressCapacityException , InsufficientCapacityException , InsufficientVirtualNetworkCapacityException , ResourceUnavailableException { } @ Override public List < NicProfile > getNicProfiles ( VirtualMachine vm ) { } protected boolean stateTransitTo ( NetworkVO network , Network . Event e ) throws NoTransitionException { } private void setStateMachine ( ) { } private Map < Service , Set < Provider > > getServiceProvidersMap ( long networkId ) { } @ Override public List < Provider > getProvidersForServiceInNetwork ( Network network , Service service ) { } protected List < NetworkElement > getElementForServiceInNetwork ( Network network , Service service ) { }

Fix:
NetworkOrchestrator . s_logger . warn ( ( ( ( "Unable<seq2seq4repair_space>to<seq2seq4repair_space>setup<seq2seq4repair_space>agent<seq2seq4repair_space>" + hostId ) + "<seq2seq4repair_space>due<seq2seq4repair_space>to<seq2seq4repair_space>" ) + ( answer . getDetails ( ) ) ) ) ;